Sewer-trap.



T. SMITH.

SEWER TRAP.

APPLICATION FILED 11112.7.1910.

Patented June 23, 1914.

Witn

Attorneys NITE s'ra'rns re'rn OFFXC.

THOMAS SMITH, OF CUMBERLAND, MARYLAND.

SEWER-TRAP.

Application filed March 7, 1910. Serial No. 547,763.

To all whom it may concern:

Be it known that I, THOMAS SMITH, a citizen of the United States,residing at Cumberland, in the county of Allegany and State of Maryland,have invented a new and useful Sewer-Trap, of which the following is aspecification.

This invention has for its object to provide a sewer trap which can becleaned out, if obstructed, without digging up the ground, and to thisend it consists in a novel construction and arrangement of clean outpipes as will be hereinafter described and claimed, said pipes beingconnected to the trap, and extending therefrom to the surface of theground, through which pipes access to the trap for the purpose stated ishad.

In the accompanying drawing, Figure 1 is an elevation of the trap, andFig. 2 is a longitudinal section thereof.

In the drawing, denotes a trap of ordinary form, herein shown as asingle pipe having a Ushaped bend and adapted to be connected at one ofits ends to a drain pipe, and at its other end to a pipe leading to thesewer. The connections may be made in the ordinary way. From the top ofthe pipe 5, at opposite ends of the bend, rise tubular extensions 6communicating with the trap. To these extensions are connected pipes 7,which converge upward and come together some distance above the trap.Each of the pipes 7 is formed at its upper end with a bell mouth 8 forthe reception of pipes 9 of such a length as to extend to the surface ofthe ground, and as these pipes 9 lie side by side they can be led up asingle hole and closed by a single cover at the surface, though thecover should fit tightly in order to prevent the escape of gases. Iconsider it of advantage to have the inclined pipes 7 lead from similarpoints at opposite sides of the bend in the trap, and thus to have thewhole device so formed that either end of the trap may be the sewer endso that the plumber need use no particular care in the manner of itsinsertion. Attention is called to the fact that if all joints are madetight and the closure at the upper ends of the pipes 9 is tight, no aircan be admitted to the trap to break the liquid seal therein. Said trapis here illustrated as strictly horizontal, but in use it is intended tobe inclined downward toward the sewer a little and the line of the waterlevel standing therein would probably open one extension 6 and close theother, perhaps about as indicated by the line A on the drawings, abovewhich there would be an air cushion in each arm of the device so as tosave the joints from bursting in case sudden strain were thrown ontothis trap from either direction. That is to say, if a larger volume ofsewerage was admitted from the inlet end sudclenly than the size of thetrap could carry off, the air cushion at that side of the trap wouldyield a little; and conversely if the liquid in the sewer should setback up to the outlet end, the air cushion at that side of the trapwould yield a little.

By providing the herein described pipes 7 and 9, the trap is accessiblefrom the surface of the ground, and it is not necessary to do anydigging if the trap requires cleaning out. A clean out device of anysuitable character may be run down either one of the pipes 9 and 7 intothe trap, and the obstruction removed therefrom. If the ob struction isstuck tightly in the trap, a clean out device may be run down into thetrap from both ends thereof, and in this manner work this obstructionloose. The insertion of the clean-out device into the trap isfacilitated in view of the fact that the bent pipe 5 has its tubularextensions 6 located above the end portions of the bent pipe so that acleanout device, when inserted through either pipe 7, will strike thecurved bottom portion of the bent pipe 5 and thus be deflected inwardlytoward the center of he bent ipe.

What is claimed is:

A device of the class described formed in two pieces, one of said piecesconsisting of a pipe bent downwardly between its inlet and outlet endsalong a curved line to form a trap and having tubular integral extensions converging upwardly from points directly over the ends of thebend, the outermost ends of the bottom of the bend being insubstantially vertical alinement with the outermost portions of theopenings from which the extensions project, and the second piece of thepipe consisting of a bell mouth, a partition dividing the mouth intoseparate openings, and pipes diverging downwardly from the respectiveopenings and seated at their lower ends in the exten sions on the otherpiece, said downwardly diverging members forming an inverted V, the bellmouth, downwardly diverging members, the trap, and the extensions at asmy own, I have hereto aflixed my signathe ends of the trap being alldisposed in ture in the presence of two Witnesses. substantially thesame plane said doWn- Wardly diverging Inemloers constituting THOMASSMITH 5 means for directing a clean-out device into Vitnesses:

the end portions of the trap. F. BROOKE VVHITING, In testimony that Iclaim the foregoing GEO. LOUIS EPPLER.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

